1812544532 has 12 divisors (see below), whose sum is σ = 3309864096. Its totient is φ = 866869080.

The previous prime is 1812544499. The next prime is 1812544537. The reversal of 1812544532 is 2354452181.

It is a junction number, because it is equal to n+sod(n) for n = 1812544492 and 1812544501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812544537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9850694 + ... + 9850877.

It is an arithmetic number, because the mean of its divisors is an integer number (275822008).

Almost surely, 2^1812544532 is an apocalyptic number.

It is an amenable number.

1812544532 is a deficient number, since it is larger than the sum of its proper divisors (1497319564).

1812544532 is a wasteful number, since it uses less digits than its factorization.

1812544532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19701598 (or 19701596 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 1812544532 is about 42573.9889134199. The cubic root of 1812544532 is about 1219.2597255897.

The spelling of 1812544532 in words is "one billion, eight hundred twelve million, five hundred forty-four thousand, five hundred thirty-two".